Reviews

In general, the product performed as expected. I wanted…

In general, the product performed as expected. I wanted a quick, lightweight method to purify water that didn't take up a lot of space in my pack.

Pros

Lightweight at 3 oz.

Quick; purifiying water at 90 seconds/liter

Small size at 6.5 x 2.0 x 1.5 inches in case

Cons

Requires expensive CR123 batteries

Requires pre-filtering of water before treatment

Requires large mouth containers.

I bought this device as a way to reduce weight and size in my pack while having an ability to purify water relatively quickly. I spent a lot time doing research online to help me determine which system met my needs.

I already own a MSR Miniworks filter unit that works flawlessly but, is heavy and bulky. I have used iodine tablets and don't care for the time to purify, taste and color of the water. The Adventurer Opti looked like what I wanted for my needs. The unit performed to my expectations without issue.

Here are the caveats:

I had to pre-filter the water to remove any large solids. Protozoa, bacteria and viruses need direct UV exposure to be killed. A bandana worked well although, slowed the water collection process.

I had to use a large mouth container to allow the swirling action needed to stir around water in the container. Basically a Nalgene brand, large mouth bottle. Not exactly lightweight.

The batteries are expensive. In my area, a pair of CR 123 batteries cost over $6 dollars for two. Not a lot of money but over time, adds to the cost of ownership.

As stated, the Steripen Adventurer Opti met my needs for one or two people. However, it is more work than I want for a clean drink of water.

Awesome technology, and extremely popular I found…

Awesome technology, and extremely popular I found while I thru-hiked the Appalachian Trail in 2012.

Pros

Technology works great

Small

Lightweight

Cons

Uses CR123 batteries, which are friggin expensive

Can be finicky at times

This is what I went to after dropping my water filter. This is a very cool piece of technology.

Basically what it does is emits a UV light that sterilizes all the gnarly junk in the water, such as Giardia (you really don’t wanna mess with that stuff). Let me say again, it sterilizes the bacteria, doesn’t get rid of it. So essentially it’s still floating around in there. But as long as you can get past that fact, the technology totally works and a lot of the time you’re pulling from some pretty clean water sources anyway (that's what I found on the A.T., anyways).

These were really popular pieces of technology on the trail and for good reason. The particular model I had used CR123 batteries, which are obscenely expensive (~$13 for 2 batteries), but if I’d known I would have purchased another model called the Classic which uses AA Lithium batteries. Still somewhat expensive, but nothing like the CR123′s.

With the Classic model, the pen fits snug into the mouth of a bottle so that you’re able to hold it upside down. Something I dealt with with the Adventurer model was the pen not being able to fit far enough down the mouth of the Powerade bottles for it to work, but I found that by filling the bottle literally to the very top, you could make it work.

I had a funny story dealing with the customer service of this company, but all in all a very good product and one that I would definitely use on a thru-hike. Consider carrying AquaMira drops as a backup just in case you run out of battery though.

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There have been a number of SteriPens over the years…

There have been a number of SteriPens over the years and this, the Adventurer Opti, was new in 2011. After looking over the mostly favorable reviews of the previous SteriPen Adventurer, I bought an Opti in spring 2011 and have been pleased with the results so far after a season of use.

It is similar to other pens, light, small, uses two batteries, etc. It is compact and very easy to use.

Just returned from a week long backpack in the Eagle Cap Wilderness in northeastern Oregon where my group of three used it daily as the sole water treatment system. When using in bright sunlight it can sometimes be hard to see whether the device is on.

Otherwise very straightforward, easy and quick. Can always use a coffee filter to filter out debris or particles.

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Have utilized the SteriPEN Aventurer Opti now on several…

Have utilized the SteriPEN Aventurer Opti now on several outings this summer instead of my pump water filter systems and found it to be very simple and effective. On previous trips (before the SteriPEN), after a rain, the rivers and streams would be full of silt and dirt. That fine silt clogged my pump filtration systems.

I tried different pump systems. I replaced filters. I backwashed the units. I found that back washing the unit once for every liter of water, no matter what pump system I was using, was very frustrating.

That frustration led me to purchase the SteriPEN Adventurer Opti. I prefilter the silt out with a coffee filter and then use the pen to swirl the rest. It works like a charm and I can get a liter of water in about four minutes.

Pros

It is lightweight and compact

Has an indication to let you know when it is finished

The replacement batteries can be found at Wal Mart

Does not alter the taste of mountain water (I like the taste)

Cons

I hear it is fragile so I do take extra precaution not to break it

One can not tell if it is working so how can you give something the thumbs up if you do not have some sort of solid evidence?

Need to always carry a back up if you are carrying some electronic device. I have tablets just in case.

Have used this device several times now in very wet and rainy conditions. For several days, drinking very muddy river water was my only choice. I prefiltered it with a coffee filter and it took out most of the mud and silt. The SteriPEN did the rest.

I found it to be much easier than fooling with bags, pumps, and backwashing filters. As long as the device keeps working this well, I am going with it.

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I have this and love it. I love it; it works well.

I love it; it works well. But like any new gadget it does take a few times to get the hang of it. Granted the cost of the battery is a little pricey, but you should be able to use it a year on a set of batteries. So that's not really a big deal, not like I would ever use 6,000 gallons of water hiking in a year.

It's a good packable size.

I bought this because most methods of water purification is just awful tasting and the the thought of me drinking bleach water is just nasty. I would rather take my chances with beaver fever.

I have waited for these UV purifiers to be around for a while, and they are now reliable. I have had mine for a year, without fault for over a hundred uses.

A lot of people list battery cost as a con, however I beg to differ. The rechargeable model requires replacement once the lithium ion battery goes, where with this, you buy new and recycle the old. I have found the CR123 batteries to be very cheap online, and don't mind spending pocket change when it comes down to health and safety.

It takes a little time getting the system down, but once you do, no big deal. Several people have also complained about the 90 seconds to go through the cycle, but how fast can one refill their reservoirs and bottles anyway?

Light weight, small and easy to use. Been using First…

Uses batteries, which even the manufacturer says are affected by temperature.

Been using First Need charcoal filter for 20 years and I know it works with all kinds of water, but one of its drawbacks was the fact you had to be close to the water source when you use it and sometimes that is a pain if you have to lean over a rock trying to get to the stream.

Anyway, now all I have to do is scoop up a bottle of water and find a comfortable spot to stir the 'Pen' for 90 seconds. Great.

People have complained about any contaminated water on the threads. I just wipe off the threads with a hankerchief.

Very much like the fact that there is no counting of drops or breaking tablets or pumping (breaking handles) or multiple parts or water test strips, just a UV light to zap the bugs

This unit is very simple and should last a very long time. One set of batteries will last way longer than most typical camping trip durations, so long as it is not continuously used as a flashlight. Flashlight though dim, does supply light in what must be its purpose as an emergency/backup light. When it is dark it is light.

Nice little case with belt loop keeps the cap on and protects the lamp well. I can say this for a fact having crashed several times with it in its neoprene case in saddle bag.

I have used with the SteriPen Pre-Filter which is a great addition, rather than coffee filters.